// Copyright (c) 2007, Eugene Rymski
// All rights reserved.
// Redistribution and use in source and binary forms, with or without modification, are permitted 
//  provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice, this list of conditions 
//   and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice, this list of conditions 
//   and the following disclaimer in the documentation and/or other materials provided with the distribution.
// * Neither the name of the "NGChart" nor the names of its contributors may be used to endorse or 
//   promote products derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY 
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
// POSSIBILITY OF SUCH DAMAGE.

using System.Collections.Generic;
using System.Text;

namespace NGChart
{
    /// <summary>
    /// Labels for pie chart
    /// </summary>
    /// <remarks>
    /// http://code.google.com/apis/chart/#pie_labels
    /// </remarks>
    public class PieChartLabels : ChartParam
    {
        #region Labels

        #region Overrides

        /// <summary>
        /// Name of the parameter
        /// </summary>
        public override string Name
        {
            get { return "chl"; }
        }

        /// <summary>
        /// Parameter data
        /// </summary>
        public override string Data
        {
            get
            {
                StringBuilder builder = new StringBuilder(256);
                if (null != Labels)
                {
                    foreach (string label in Labels)
                    {
                        builder.Append(label);
                        builder.Append('|');
                    }

                    if (builder.Length > 0)
                        builder.Length--;
                }

                return builder.ToString();
            }
        }

        #endregion

        /// <summary>
        /// Pie chart labels
        /// </summary>
        public IEnumerable<string> Labels
        {
            get { return _labels; }
            set { _labels = value; }
        }
        private IEnumerable<string> _labels;

        #endregion

        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="labels">Collection with labels</param>
        public PieChartLabels(IEnumerable<string> labels)
        {
            _labels = labels;
        }

    }
}
